Back in the caveman days it was the strongest who survived.
You had to stay healthy as well as strong no matter what or you were gone.
No medicine, fantastic shelter or steady food. Those people were hearty. They just lived off the land as well as the best a singles got to live. If you did that to people now, the people I was with and I would not do so hot. I would be picked off within a week, for a single, I am totally used to having temperature control. I have zone control for my house, and every room is set to a particular temperature program. I get AC when I work out, heating when I sleep as well as quality cooling when I have breakfast. I even control the humidity levels in those spaces! However, the main issue for myself and others in the wild would be the air quality. I have a dehumidifier to work with my air conditioner. I have a humidifier for my oil furnace. I have an air purification proposal as well as UV lights installed in the Heating, Ventilation and A/C; Any little air quality component you can come up with, I have it. I want my indoor air quality to have the right amount of moisture as well as be clean. That is because my skin dries out or breaks out easily. I also can get sick from dusty air conditions. Can you imagine myself and others as a caveman? I heard the outdoor air quality is unquestionably cleaner than inside! But what about how dry it gets in the Winter as well as moist in the summer? I would be dead or ready to kill myself without my IAQ equipment.